@article{GDZPPN002371316, title = {On a problem of the Additive Theory of Numbers}, journal = {Mathematische Zeitschrift}, volume = {30}, year = {1929}, pages = {433-448}, zbl = {55.0703.01}, url = {http://dml.mathdoc.fr/item/GDZPPN002371316} }
Franklin, C.J.A. and E.H. Linfoot. On a problem of the Additive Theory of Numbers. Mathematische Zeitschrift, Tome 30 (1929) pp. 433-448. http://gdmltest.u-ga.fr/item/GDZPPN002371316/